I've hiked 3 of the 4 routes up Baldy, so just because the Bear Canyon Trail is down, doesn't mean you can't do the hike. I recommend going up the Devil's Backbone and down the Ski Hut Trail (very steep descent though.)
See more here and scroll to the appropriate section:
http://hikinginsocal.blogspot.com/p/hikes.html And here:
Dan's Hiking Pages http://www.simpsoncity.com/hiking/baldy.html